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10.0–10.1: The system displays text on the screen, giving details about the error, and becomes unresponsive. 10.2: Rolls down a black transparent curtain then displays a message on a white background informing the user that they should restart the computer. The message is shown in English, French, German and Japanese.
This file contains a "snapshot" of useful low-level information about the system that can be used to debug the root cause of the problem and possibly other things in the background. If the user has enabled it, the system will also write an entry to the system event log.
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The magic SysRq key is a key combination understood by the Linux kernel, which allows the user to perform various low-level commands regardless of the system's state. It is often used to recover from freezes , or to reboot a computer without corrupting the filesystem . [ 1 ]
Most modern Linux distributions documentation specify using kill-HUP <processID> to send the SIGHUP signal. [3] Daemon programs sometimes use SIGHUP as a signal to restart themselves, the most common reason for this being to re-read a configuration file that has been changed.
This is usually due to problems on the mail server, heavy internet traffic, or routing problems. Unfortunately, other than waiting, you won't be able to determine if the message is delayed or undeliverable. If possible, ask the sender to resend the message to see if you can get the message a second time. Check for emails in your Spam folder
An Abnormal end or ABEND is an abnormal termination of software, or a program crash.Errors or crashes on the Novell NetWare network operating system are usually called ABENDs.
kdump (Linux) – Linux kernel's crash dump mechanism, which internally uses kexec System.map – contains mappings between symbol names and their addresses in memory, used to interpret oopses References